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Extending relational database model for uncertain information

Chia sẻ: Hoa Hoa | Ngày: | Loại File: PDF | Số trang:18

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Extending relational database model for uncertain information

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In this paper, we propose a new probabilistic relational database model, denoted by PRDB, as an extension of the classical relational database model where the uncertainty of relational attribute values and tuples are respectively represented by finite sets and probability intervals. A probabilistic interpretation of binary relations on finite sets is proposed for the computation of their probability measures. The combination strategies on probability intervals are employed to combine attribute values and compute uncertain membership degrees of tuples in a relation.

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